#include <iostream>
#include "Common.hpp"
#include "InetAddr.hpp"

void Usage(std::string proc)
{
    std::cerr << "Usage: " << proc << " server_ip server_port" << std::endl;
}

// ./tcpclient server_ip server_port
int main(int argc,char* argv[])
{
    if(argc != 3)
    {
        Usage(argv[0]);
        exit(USAGE_ERR);
    }
    std::string server_ip = argv[1];
    uint16_t server_port = std::stoi(argv[2]);

    //1.创建套接字
    int sockfd = socket(AF_INET,SOCK_STREAM,0);
    if(sockfd < 0)
    {
        std::cerr << "socket error" << std::endl;
        exit(SOCKET_ERR);
    }

    //2.向服务器发起建立连接的请求
    InetAddr serveraddr(server_ip,server_port);
    int n = connect(sockfd,serveraddr.NetAddrPtr(),serveraddr.NetAddrLen());
    if(n < 0)
    {
        std::cerr << "connect error" << std::endl;
        exit(CONNECT_ERR);
    }

    //3.echo client
    while(true)
    {
        //1.发送消息
        std::string input;
        std::cout<<"Please Enter# ";
        std::getline(std::cin,input);

        write(sockfd,input.c_str(),input.size());

        //2.接收消息
        char buffer[1024];
        ssize_t m = read(sockfd,buffer,sizeof(buffer)-1);
        if(m > 0)
        {
            buffer[m] = 0;
            std::cout<<"server echo# "<<buffer<<std::endl;
        }
    }
    
    close(sockfd);
    return 0;
}